Abstract：
:Idiopathic dilated cardiomyopathy is a severe disease of unknown etiology. Accumulating evidence suggests that agonist-like autoantibodies against the beta 1 adrenoceptor in the circulation of dilated cardiomyopathy may play an important role. The aim of this study was to evaluate the effects of the selective beta 1-adrenoceptor blocker, bisoprolol, on beta 1-adrenoceptor peptide induced autoimmune myocardial damage. In the animal model of autoimmune cardiomyopathy induced by active immunization of rabbits with beta 1-adrenoceptor peptide, bisoprolol was given at a dose of 3 mg/day throughout the study period. Our results showed high titer of anti-beta 1-adrenoceptor antibody in the immunized group throughout the study but not in the group receiving only bisoprolol. Cross-reactivity to beta 2 adrenoceptors was observed in some of the immunized rabbits, but disappeared almost entirely after 6 months. As compared to the beta 1-adrenoceptor peptide immunized group without bisoprolol treatment, bisoprolol treated beta 1-receptor peptide immunized group showed increase in the wall thickness and decreases in cavity dimension in anatomical measurements and only mild alterations in macro- and microscopic examinations. Thus, our study clearly demonstrated a beneficial effect of bisoprolol in rabbits who have developed autoimmune myocardial damage.
journal_name
Herzjournal_title
Herzauthors
Matsui S,Persson M,Fu HM,Hayase M,Katsuda S,Teraoka K,Kurihara T,Fu MLdoi
10.1007/s000590050018keywords:
subject
Has Abstractpub_date
2000-05-01 00:00:00pages
267-70issue
3eissn
0340-9937issn
1615-6692journal_volume
25pub_type
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